Maintaining an efficient and responsive warehouse requires more than just managing inbound and outbound flows. Internal movements and a constant focus on inventory accuracy are essential for operational excellence. These processes ensure that stock is in the right place at the right time and that system quantities match physical quantities. This section covers key internal processes like replenishment and physical inventory.

Replenishment

Replenishment is the process of moving goods from a reserve storage area to a primary picking area. The goal is to ensure that picking bins remain adequately stocked to fulfill orders without interruption. The process is controlled by fields defined at the storage type or bin level:

• Minimum Stocking Quantity: The stock level that triggers a replenishment request.
• Maximum Stocking Quantity: The target stock level for the bin after replenishment.
• Replenishment Quantity: The standard quantity to be moved during replenishment.

SAP EWM supports several types of replenishment to suit different operational needs.

• Planned Replenishment Warehouse planners can run this proactive process either interactively or schedule it as a background job. The system calculates replenishment needs when the stock in a picking bin falls below the defined minimum quantity.
• Order-Related Replenishment This is triggered when a specific outbound order requires a quantity that is greater than the available stock in the picking bin. The system replenishes the needed amount to fulfill the order.
• Automatic Replenishment This process is initiated automatically as soon as a warehouse task confirmation causes the stock level to drop below the minimum threshold.
• Direct Replenishment This is an immediate replenishment process triggered during a pick denial scenario, typically in a fixed bin environment, to resolve a stock shortage on the spot.

Physical Inventory

Physical Inventory is the process of counting the physical stock in the warehouse and comparing it to the quantities recorded in the system. This is crucial for maintaining inventory accuracy, fulfilling financial accounting regulations, and identifying discrepancies that may indicate process issues.

SAP EWM supports three primary physical inventory procedures:

• Periodic This procedure involves a full inventory count of the warehouse on a specific day or over a short period, often conducted annually for financial reporting.
• Continuous This method allows for inventory counting to be performed at any time throughout the fiscal year, spreading the workload and reducing the need for a complete shutdown.
• Cycle Counting In this methodology, products are categorized (e.g., A, B, C based on value or velocity), and each category is counted at a different frequency. High-value “A” items might be counted frequently, while low-value “C” items are counted less often.

Ad-hoc Physical Inventory

Ad-hoc Physical Inventory is a form of continuous inventory that is performed for a specific, immediate reason, such as investigating a stock discrepancy or counting a damaged product. It can be executed for a single storage bin or a specific product at any time.

Storage Control

Storage Control is a mechanism used to determine complex product movements within the warehouse. It is used when a simple direct movement is not possible and intermediate steps are required. There are two types:

• Layout-Oriented Storage Control: Directs movements based on the physical layout of the warehouse (e.g., moving goods through an identification point before putaway).
• Process-Oriented Storage Control: Directs movements based on the process requirements (e.g., moving goods to a VAS work center before they are sent to the final storage bin).

With a firm grasp of how to manage stock within the warehouse, the focus can shift to the advanced strategies that elevate warehouse performance from merely functional to highly optimized.